【单选题】We can conclude that_____.
A.
air pollution is easier to control than water pollution
B.
the problem of polluted air is a problem overnight
C.
the impact of air pollution has been known for centuries
D.
research on the efforts of air pollution is incomplete
【单选题】—If you have a backache, you should lie down and rest. —____________ [ ]
【单选题】Suppose you go into a fruiter's shop, wanting an apple—you take up one, and on biting it you find it is sour you look at it, and see that it is hard and green. You take up another one, and that, too, ...
【单选题】---- You can take a walk daily if you want to keep healthy. ---- .
B.
Thanks for your advice
C.
I like surfing the Internet
【单选题】1为了消除或者减轻系统的水平失调可采用那种系统?
【简答题】阅读理解。 People and air pollution are often in the same places. This means that cities with large populations have the biggest problem of dirty air. Air pollution is caused by many different things. A ma...
【单选题】—You aren’t a stranger, are you? —____, don’t you remember ____ me in Mr Black’s office yesterday?
【简答题】In today's world, almost everyone knows that air pollution(污染)and water pollution are harmful to people's health. However, not all the persons know that noise is also a kind of pollution, and that is ...